What is better for marking all income connection in mangle?

RouterOS Beginner Basics
1

I am using packet mark:
chain=forward action=mark-packet new-packet-mark=internet_rx_normal
passthrough=yes in-interface=internet

or is better to use it with at first connection mark and then packet mark?

chain=forward action=mark-connection
new-connection-mark=internet_rx_normal_conn passthrough=yes
in-interface=internet

chain=forward action=mark-packet new-packet-mark=internet_rx_normal
passthrough=no connection-mark=internet_rx_normal_conn

Or any better suggestions?

2

Connection mark first

It is easyer on router cpu and I am told (I forget) if you mark connection it also keeps ack etc together.

I am rusty on this subject.